Spring bed-bottom.



SPRING BED BOTTOM.

APPLICATION FILED NOV. 4, 1903.

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No. 760,746. I PATENTED MAY 24, 1904.

A.,J. LOGAN & JQTJBROWNL SPRING BED BOTTOM. APILIOAIION FILED NOV. 4.1903.

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WITNESE s INVENTOFLS m: Norms vm'zns co.. PHDTO-LITNOY. WASHINGTON, a.c,

1 STATES P TENT QFEI E. f

a r f ALBERT LOGAN AND Patented Ma 24 1.

JOHN FR ANKLIN BROWN, OF-FITTSBURG, PENNSYLVANIA.

SPRING BED-BOTTOM.

' a sPEcIFIcATmN forming part of Letters' P'atent N0. 760,746,;1ated May24; 1904.'

Application t1edNtvamber4,1903.' Seria11To.179,85 5. (Nb model.)

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Be it known that we, ALBERT J LOGAN and JOHN-FRANKLIN BROWN,"residentsof Pittsburg, in the county of {Allegheny and State ofPennsylvania, have invented anew and useful Improvement in Spring Bed-Bottomsj and we do hereby declare the following to be af ull, clear, andexact description thereof.

Our invention relates to a base or support for spiral or helical springsfor use in beds, couches, seats, and the like. Its object is to providea. strong rigid base and a manner ofattaching the springs ,to the samein a neater, more secure, and economical way than has heretofore beenaccomplished.

1n the accompanying draw1ngs,F1gure 1- is a plan view of a portion ofthe bed-bottom constructed according to our invention. Fig.-

2 is an end view of the same. Figs. 3 and 4 2o "of applying the springsthereto.

are opposite side views showing the manner Flg. 5 1s a section on theline 5 5, Fig. .1. Fig. dis a ing the spring thereto.

similar section on the line 6 6, 1. Fig. 7 is a bottom View of one ofthe cross members or slats, showing the manner of apply:

Fig. 8- is a detail view showing the manner. of-applying the crossbarsto the side members, and Fig. 9 is a-plan view of the blank from whichthe cross-bars are formed. 1

Spring bed-bottoms provided with metal bases should be light in weightand should also be made in sections to permit easy handling thereof andto prolong the life oruseful ness of the springs. A spring bed-bottommade in three interchangeable sections can be easily handled andwill'outlast three onepiece bottoms made in the usual manner, for thereason that the damage or depression to the springs invariably occurs ator near the middle of the bed, and therefore unless the middle sectioncan be moved to the head or foot and replaced by one of its fellows thebed-bottom as a whole becomes useless.

Our invention is adapted for making bedbottoms either in threeinterchangeable sections or in a single piece. In the drawings only onesuch section has been shown;'but as the other two sectionsare identicalin structhe length of the section shown a .bed-bottom may be formed.

Inthe drawings the side railsv of the bed '55 ture with the'oneshown-adescription of the 5 one will sufiice' for all, and it will alsobereadily understood thatby merely extending one-piece are shown; at' 1,-these being shown of angle shape, as 18 common in ron bedsteads, Ourimproved base or'supportcomprises a series v of cross-bars or slats 2,which are of invertedtrough shape, as shown, and suitably secured attheir ends to side members 3, the latter being ordinary commercialplates QIEbaFS of-the desired dimension,- and which can ,be cut offsquare at their ends either for forminga sec-' tional bottom orextendedthe entire length 5 of the bed for forming a, one piecebottom. Thecross-bars 2 are provided at their ends with-shoulders 4, and inassembling these with the side members the latter are brought up firmlyagainst said shoulder, thus forming 7 a rigid base which will not becomeaskew and obviatlng the necessity of diagonal bracing,

1 thus considerably lightening the same.

Thecross-bars 2 are preferably formed of inverted-trough shape; asshown, ,having the two side portions 5 substantially vertical, so as 'toverygreatly stiffen the same, thus mak-' ing it possible to use platemetal of very thin gage and greatly lightening the-base, but at thesame; time getting sufficient strength.

These cross-bars are made by taking flat plates of the desired width andthickness and first stamping them outat the ends to form the notches 6and the holes 7, the latter serving for the passage of the rivets 8,which secure 5 saidcross-bars to the side members 3. Intermediate theirends the plates are punched with groups of holes of three each 10, 11,and 12. This plate is then either rolled 'or bent by means of dies intothe shape shown in Fig." 9

members in the manner above described, so as to get a rigid base withoutthe use of diagonal bracing.

The springs 15 may be of any form of spiral the end is crimped or bent,as at 16, thus preventing said spring from becoming detached; but asthis end lies in the trough-shaped bar it is out of the way and cannottear the bed ding or otherwise be objectionable.

At the tops the springs may be connected by any suitable device knownfor this purpose, that shown in Fig. 1 being the same as that covered byLetters Patent toJohn Franklin Brown, No. 704,674, dated July 15, 1902;but as it is not claimed herein it need not be described.

It will be observed that the base described is simple of construction,strong, and very light. The shape of the cross-bars, having the two sidewalls thereof substantially vertical, gives the necessary strength sothat very thin gage metal can be used, and at the same time they form asuitable place for the holes into which the springs are threaded. Thecentral ridge 14 furthermore is made of a height somewhat greater thanthe distance between adjacent coils of the springs, so that when thelatter are threaded into place this ridge serves to hold the two lowercoils somewhat spread apart, as indicated in Fig. 5, thus holding thesecond coil 17 under tension and obviating the possibility of vibrationand rattling. The cross members are all identical, and the side membersare formed of ordinary fiat commercial metal, so that only two shapes ofiron are used and the connection between these being such that diagonalbracing is dispensed with.

We of'course are aware that spring-bottoms have heretofore been made insections; but each section has required additional material and labor,thus adding to the cost of the same. With our base, however, theconstruction is such that asectional base can be made just aseconomically as a one-part base, it merely being necessary to cut theside members 2 into sections, this being the only additional labor on asectional base over that of a one-part 7 base.

What we claim is 1. A base or support for the springs of beds and thelike comprising side members, metallic cross members of inverted-troughform from end to end, said cross members having their side walls cutaway at the ends and having their curved top portions projecting overthe side members, means. for securing said projecting end portions tothe side members, and coiled springs supported by said cross members. i

2. A base or support for the springs of beds and the like comprisingside members, metallic cross members of inverted-trough form from end toend, said cross members having their side walls cut away at the ends toform vertical shoulders and having the projecting portions extendingover the side members with the vertical shoulders bearing against theside members, means for securing said projecting end portions to theside members, and springs supported by said cross members.

3. A base or support for the springs of beds and the like comprising aseries of metallic cross-bars of inverted-trough form provided withholes in the sides thereof and a longitudinal ridge on their uppersides, a series of springs threaded, throi1gh the holes in said bars andhaving one coil thereof pressed upwardly by said ridge and having theirends bent over inside of said trough-like cross- ;bars, and side membersto which said crossbars are secured.

4. A base or support for the springs of beds or the like, comprising aseries of metallic cross-bars of inverted-trough form provided withholes in the sides thereof and a longitudinal ridge on their uppersurfaces, a series of springs threaded through the holes in said barsand having one coil thereof pressed upwardly by said ridge, and sidemembers to which said cross-bars are connected.

5. A base or support for the springs of beds and the like, comprising aseries of metallic cross-bars or slats of inverted-trough form from endto end and having vertical side walls provided with groups of holestherethrough and with vertical shoulders at their ends, and having endportions projecting beyond said shoulders, side members secured to theprojecting ends of said cross-bars and bearing against the shoulders ofthe latter, and springs threaded through the holes in said cross-bars.

In testimony whereof we, the said ALnalrr J. LOGAN and J omv FRANKLINBROWN, have hereunto set our hands.

ALBERT J. LOGAN. JOHN FRANKLIN BROVN.

Witnesses:

MARGARET O. Knnnnn, ROBERT C. To'r'rmv.

